"In twelfth-century Spain, Christian authorities supported the local Rabbanite community and helped the latter to expel the Karaites from Spain."
The Karaites of Galicia: An Ethnoreligious Minority Among the Ashkenazim (2008) By Mikhail Kizilov
"We find the Jewish leadership in Muslim Spain and in the Christian states of the early Reconquista boasting of their vigorous action in suppressing the few representatives of the Karaite sect."
Aspects of Jewish culture in the Middle Ages (1979) By Paul E. Szarmach
"Rabbi Yoseph ben Faruj, who was made the head of the Jews in Spain and given the title of Prince, expelled the Karaites."
Jewish Fundamentalism In Israel (1999) By Israel Shahak and Norton Mezvinsky